| 21世纪初舟曲植被变化特征分析 |
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| 引用本文： | 张建勇,李牧轩,王殿国,熬泽建.21世纪初舟曲植被变化特征分析[J].现代农业科技,2022(23). |
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| 作者姓名： | 张建勇 李牧轩 王殿国 熬泽建 |
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| 作者单位： | 张建勇,甘南州气象局,甘南州气象局,甘南州气象局 |
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| 摘 要： | 基于MOD13A3数据，建立了2001-2018年舟曲植被覆盖时空数据集，结合DEM数据和土地分类覆盖数据，分析了舟曲植被覆盖的时空分布特征，并利用同期气象资料探讨其对气候变化的响应。结果表明：舟曲植被呈西多东少的分布特征；舟曲整体上呈增加趋势，其中白龙江沿岸、拱坝河南部沿岸及舟曲中东部部分区域植被增加明显。舟曲降水量变化对植被的影响较明显，气温变化对植被的影响较弱。舟曲森林、灌丛面积呈增加趋势，草原、湿地面积呈下降趋势，植被类型的变化与人类活动关系密切。近年来在舟曲降水量呈增加趋势的条件下，湿地面积迅速缩小，舟曲生态环境的保护、研究仍需加强。
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| 关 键 词： | 舟曲县 归一化植被指数 时空分布 |
| 收稿时间： | 2022/2/9 0:00:00 |
| 修稿时间： | 2022/2/9 0:00:00 |
Analysis of vegetation change characteristics in Zhouqu in the early 21 ST century |
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| Authors: | Li Muxuan and |
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| Institution: | Gannan Meteorological Bureau,, |
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| Abstract: | In this paper, the MOD13A3 data was used to investigate the vegetation coverage of Zhouqu county from 2001 to 2018.The digital elevation model (DEM) and land cover classification were also applied to divide the interval altitude and different lands use to further discuss spatiotemporal pattern and variation of vegetation coverage,and then to analyze the climate response by using meteorological data.The results show that the horizontal pattern of vegetation in Zhouqu county is more in the western region and less in the eastern region. The whole vegetation coverage in the Zhouqu county is increasing. Among them, the vegetation increases obviously along the Bailong River, South coast of Gongba River and Middle East of Zhouqu county.The change of precipitation in Zhouqu has obvious influence on vegetation, while the change of temperature has weak influence on vegetation. The area of Zhouqu forest and shrub shows an increasing trend, while the area of grassland and wetland shows a decreasing trend. The change of vegetation type is closely related to human activities. In recent years, under the condition of increasing precipitation in Zhouqu, the wetland area is shrinking rapidly, and the protection and research of Zhouqu ecological environment still need to be strengthened. |
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| Keywords: | Zhouqu county NDVI spatial-Temporal variation |
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